28758521960 has 64 divisors (see below), whose sum is σ = 77165740800. Its totient is φ = 9431364096.

The previous prime is 28758521933. The next prime is 28758521969. The reversal of 28758521960 is 6912585782.

It is a hoax number, since the sum of its digits (53) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (28758521969) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2226365 + ... + 2239244.

It is an arithmetic number, because the mean of its divisors is an integer number (1205714700).

Almost surely, 2^28758521960 is an apocalyptic number.

28758521960 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28758521960 is an abundant number, since it is smaller than the sum of its proper divisors (48407218840).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28758521960 is a wasteful number, since it uses less digits than its factorization.

28758521960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4465650 (or 4465646 counting only the distinct ones).

The product of its (nonzero) digits is 2419200, while the sum is 53.

The spelling of 28758521960 in words is "twenty-eight billion, seven hundred fifty-eight million, five hundred twenty-one thousand, nine hundred sixty".